JavaScript Library & Framework
16,473 of the 965,200 top sites in our Tranco top-1M census run Modernizr (1.7%). A JavaScript library that detects which HTML5/CSS3 features a browser supports, enabling progressive enhancement. Detection is homepage-level HTML/header fingerprinting, so a site can run Modernizr on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | mit.edu | #225 (Tranco) | Find emails |
| 2 | npr.org | #466 (Tranco) | Find emails |
| 3 | uk.com | #532 (Tranco) | Find emails |
| 4 | cornell.edu |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| zenmediastack.nl | #562,472 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| groupeleduff.com | #562,560 | Bootstrap, Font Awesome, Google Tag Manager + 5 more | Find emails |
| stealthangelsurvival.com | #562,593 | Bootstrap, Bugsnag, Cloudflare edge/CDN + 9 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| palabrasdelderecho.com.ar | #562,647 | Bootstrap, Font Awesome, Google Analytics + 6 more | Find emails |
| dadway-onlineshop.com | #562,653 | Amazon CloudFront, Font Awesome, Google Analytics + 4 more | Find emails |
| freeimages.co.uk | #562,674 | Google Analytics, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| naturalstoneinstitute.org | #562,678 | Adobe Fonts (Typekit), Bootstrap, Google Ads Conversion + 8 more | Find emails |
| talenenergy.com | #562,695 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| omegatelecom.ua | #562,773 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| selunion.co.kr | #562,846 | Font Awesome, Let's Encrypt, Nginx + 5 more | Find emails |
| ncrs.org | #562,940 | Let's Encrypt, Meta Pixel, PHP + 1 more | Find emails |
| delmarlearning.com | #563,006 | Amazon (ACM), Amazon CloudFront, Cloudflare edge/CDN + 9 more | Find emails |
| rime.im | #563,015 | Bootstrap, Fastly, Font Awesome + 3 more | Find emails |
| auralee.jp | #563,016 | Adobe Fonts (Typekit), Font Awesome, Foundation + 6 more | Find emails |
| servoescolar.mx | #563,064 | Azure DNS, Bootstrap, DigiCert + 7 more | Find emails |
| meierijstad.nl | #563,198 | Font Awesome, Swiper, jQuery | Find emails |
| registry-clean.com | #563,251 | Bootstrap, Cloudflare, DDoS-Guard + 9 more | Find emails |
| masterwal.jp | #563,349 | Amazon CloudFront, Amazon Route 53, Font Awesome + 9 more | Find emails |
| guclunet.com | #563,357 | Bootstrap, Google Analytics, Google Fonts + 4 more | Find emails |
| cabotcorp.com | #563,557 | DigiCert, Fancybox, Google Tag Manager + 6 more | Find emails |
| zhejiangdongshun.com | #563,586 | ASP.NET, DigiCert, jQuery | Find emails |
| gaqm.org | #563,609 | Bootstrap, Font Awesome, Google Ads Conversion + 7 more | Find emails |
| eagleroofingwallsystems.com | #563,618 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| lg-host.ru | #563,793 | Bootstrap, DDoS-Guard, Font Awesome + 8 more | Find emails |
| outdoorsfirst.com | #563,800 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →